If you had to convey freedom in one symbol, in one motif, in one theme, how would you do so? Would adulthood represent freedom, the ability to make your own decisions? Would it be represented by a car, making it possible for you to go wherever you can on land? Or would it be an open field, where you can continue running in any direction? All of these are totally valid ways to portray freedom. It only makes sense that such a nebulous concept can be seen in a million different manners.